Vacuum Security Valve Isv-1/4 for Maintenance of Vacuum If One or More Suction Cups with in a Group Fail to Make Contact with The Workpiece. Size=G1/4, Ejector Pulse Suitability=8 bar, Assembly Position=Any, Operating Pressure=0 - 0, 95 bar, Required Suction Rate at-0.5 bar=1, 6 L/Min, Festo